Bxank -treating- machine



l. C. BUCKMINSTER BLANK TREATING MACHINE Dec. 8 1925.

5 She ts-Sheet 1 Dec. 8, 1925. A 1,564,198

I. c. aucmms'rsn BLANK TREATING MACHINE Filed March 8, 1920 5Sheets-Shut 2 Dec- 192's- I. C. BUCKMINSTER BLANK TREATING MACHINE FiledMarch 8, 1920 5 Sheets-Sheet 5 Dec. 8

l. c. BUCKMlN STER BLANK TREATING MACHINE Filed March a, 1920 sSheets-Sheet 4 Dec. 3 1925.

l. C. BUCKMINSTER BLANK TR ATING MACHINE Fild March a, 1920 5sheets-sneet' 5 Patented Dec. 8, 1925.

' UNITE!) STA TEE.

IRA C.. BUCKMINSTER, OF BEVERLY, MASSACHHSETCFIS,

ASSIGNORZ TO "UNITED SHOE MACHINERY CQRPQRA'BION, OF PAEEBQON, NEWJERSEY, A CQBIPORAITION OIE NEW JERSEY.

Application filed March 8, 1920;

To all whom may concern:

Be it known that I, IRA O. BUCKMINSTER, a citizen of the United States,residing at Beverly, in the county of Essex and State of Massachusetts,have invented certain Improvements in Blank-Treating Machines, of whichthe following description, in; connection with the accompanyingdrawings, is a specification, like referencecharacters on the drawingsindicatinglike parts in. the several figures.

This invention relates to. blank treating machines and the machineherein shown and described for the purpose of illustrating oneembodiment of the invention is especially designed" tor operating uponthe top lifts of boots and: shoes, although it will be apparent thatmany of the novel features of the invention are not limited to such use.

An important object of the invention is to produce a machine to skiveoff the surfaces of top lifts so that the lifts will be accuratelyevened; in other words, it. is desired that each lift shall: be ofuniform thickness throughout its: entire area. Hitherto heel lifts havebeen: evened on an ordinary splitting machine, but the diffilculty hasarisen that the forward edge of a lift as it reaches the knife and therear edge of the'endz of the lift as it leaves the rolls have beenbeveled ofi" somewhat so that the lifts have not been. satisfactorilyevened.

A further object is to provide a machine that will perform severaloperations auto matically and thus eliminate handling of the blanks. Inthe embodiment shown, the machine is organized to feed the blanks from.a magizine to an intermittently rotatable table, to clampthem inposition on the table, measure them for thickness, skive them and thencarry: them beneath a discharge magazine where they are expel led andstacked in a. pile. In various aspects. however, the invention is notlimit ed to a. machine fGXlTPeFEOI'IniDg all these operations;

Another object is to providea feeding magazine to hold blankswhen it isdetached from the nachine; and to; release the blanks to a feedingdevice when. the magazine is placed. in eye-save position on themachine:

BLANIZ TREATING ILVLACHINE.

Serial No. $645,174.

cludes novel means for adjusting the feeding device so that it willoperate properly with the different sized blanks and magazines.

The invention also comprises improved securing; means to retain theblanks on a rotatable support or table. Preferably the securing means isautomatically operated as by suitable cams as the support or tablerotates, the construction being such that the securing means isinoperative when the blanks are fed to the table or expelled theretrombut is operative when the cutting is taking place. Novel means forintermittently rotating the table is also provided.

.rinother object is to provide means to measure the thickness of eachblank and then set cutter in accordance with this thickness. In thepreferred embodiment, the machine is organized so that a measur ingmember engages each blank near the center and then automatically setsthecutter so that the latter will cut in a slightly lower plane than thebottom of the member. Thus, even if the various blanks differ from eachother considerably in thickness, approximately the same amount ofmaterial will be cut from each. The invention includes also a novel formof presser, an important feature being; that this presser is carried bythe cutter head and preferably is yieldably and rockably mounted on thecutter head to properly engage an uneven blank and hold it underyielding pressure.

Still another object is to provide novel means whereby further feedingof blanks is prevented when a discharge magazine has been filled withfinished blanks. In the preferred construction, an automatic stop deviceis mounted in the discharge magazine in such manner that it can be movedtoinoperative position whenever it it desired to remove the magazinewith its finished blanks.

Other objects and features of the invention will be apparent upon aconsideration of the following specification and claims in connectionwith the accompanying drawings. Although the machine has been describedas adapted for operation on top lifts for leather heels, it is notlimited to operation on top lifts nor to leather blanks' Referring tothe drawings,

Fig. 1 is a front elevation of the machine as a whole with some parts insection;

Fig. 2 is a top plan view with parts in section;

Fig. 3. is a section on the line 33 of Fig. 1;

Fig. 4 is a fragmentary section on an enlarged scale of the receivingmagazine and feeding mechanism, the section being taken on the line 44of Fig. 2;

Fig. 5 is an enlarged section of the knife or cutter and cooperatingparts the section being along the line indicated by 5-5 in Fig. 2;

Fig. 6 is an enlarged section of the ejecting mechanism on the line 66of Fig. 2;

Fig. 7 is afragmentary plan view partly in section of part of thefeeding mechanism shown in Fig. 1 the section being on line 7-7 of Fig.4;

Figs. 8 and 9 are detail sections of the ejecting and feedingmechanisms, respectively, Fig. 8 being on the line 8+8 of Fig. 6 andFig. 9 being on the line 99 of Fig. 4;

Fig. 10 is a perspective view of a detail of the knife settingmechanism;

Fig. 11 is a development of the cams that determine the sequence of theabovementioned operations;

Fig. 12 shows a plan View of a modified form of clamping device for theheel lifts including a modified form of cam for releasing the clampingdevice;

Figs. 18, 14 and 15 are sections taken on the lines 13--13, 14l14; and1515 of Fig. 12, respectively.

Referring to the drawings, 2 indicates the frame which in this casecarries two complete machines diametrically disposed. Power from a beltis applied to tight and loose pulleys 3 on the shaft 5 which carries aworm 6 to drive a worm wheel 7 on a vertical shaft 8. The shaft 8carries a cam member 9 with four cam slot-s which operate the measuring,cutting, feeding and ejecting mechanisms, respectively. For rotating thesupport or table 10 intermittently, the shaft 8 carries, at its upperend, two cranks 11 and 12, the upper crank 11 being pivotally connectedby a link 13 to an upper ring 15 and thelower crank being pivotallyconnected by the link 14 to a lower ring 16 (see Figs. 1, 3 and 6).These two rings 15 and 16 surround the sleeve 17, integral with, anddepending from the table 10 and each ring pivotally carries a springpressed pawl 18 which in turn engages with teeth 19 disposed atintervals around the table sleeve 17 keyed tothe latter. There are sixteeth on the table spaced60 apart and one pawl 18 on each ring, the twopawls being spaced 60 apart. It will be apparent that rotation of theshaft 8 will. cause rotation of the table intermittently through thedescribed parts. The two cranks 1.1 and 12 are diametrically arrangedand consequently there are two positions at which their crank pins willbe atcdead centers with reference to the shaft 8 and the pivots betweenlinks 13, 14C and the rings 15, 16. At these positions, the table isstationary and it is then that the operations of feeding, cutting andejecting occur. The number of teeth may of course be varied, dependingon the number of machines disposed around the center line.

Referring to Figs. 4 and 9, there isshown a lift feeding magazine 20detachably mounted in a holder 21, 21, adjustably supported in a yoke orbracket 22 and overlying the rotatable table. Each feeding magazine 20carries spring pressed catches 23 which normally support, in themagazine a series of heel lifts but these catches are designed torelease the lifts automatically when the lugs 23 on the catches engagethe holder 1 21, 21. The lifts then drop into the lower portion of theholder as indicated in Fig. 41. It is intended that different sizedmagazines shall be used for different sized lifts and the holder 21, 21is therefore made adjustable to accommodate the different magazines.This adjustment is effected by the following appliances. (See Figs. 2,41 and 6.) A threaded stud 2 1 secured to the hold ing member 21 passesloosely through the yoke or bracket 22 and carries a knurled nut 25which is threaded both inside and out but one thread is right and theother left. The nut is held against longitudinalmovement by an integralcollar 26 engaging behind lugs 27 on the yoke or bracket 22.

Referring to Fig. 2, the exterior threads on the nut 25 engage thethreaded extremities 28 of bell crank levers 29 pivotally mounted on theyoke at 30. The arm 31 of each bell crank lever is slotted to receive apin 82 projecting radially from a rod 33 slidably mounted in the slottedsleeve 84 on the yoke 22. The rod 83 carries the holding member 21 whichis operated simultane ously with the holding member 21 upon rotation ofthe nut 25, as is obvious. The holding member 21 engages the breast ofthe heel lifts and has horizontal lugs 35 to supportthe lifts. Theholding members 21 engage the curved sides of the heel-lift and havehorizontal supporting lugs 36. The

holding members 21-" are cut away near the button-i at d "aoen t thecurved sides of the lowermost lift in order to allow the lift 10 be fed,but they extend low enough to aid in retaining the seco ill lift inposition. The holding member 2'1 is curvc-zd Where engaged. by thebreast of each lift in order to position the series of lifts inoverlapping relation.

'The feeding mechanism for feeding the blanks one at a time is shown atthe right of Fig. f and includes a sliding feed con trolling finger 41mid sliding and swing in'g feed control-ling linger 450 both of Whichare adjustably mounted with reference to the feeding magazine 20. Thefinger 40' is slidable in guideiva'ys 4-2 on a carrier 43 which ispivoted at L45 on an adjustablebrack'et 4-5. The bracket 41:53 isslotted at 4:6 and is provided with a clan-1p nut 47 which Will hold itin adj usted positions along the guideways 48 in the yoke 22'. Thefinger 450 is pivoted at 49 to a lever 50, this lever being pivotedloosely at one end at 51 to the bracket 4L5 and being pivoted near itsmiddle at 52 to the carrier 4-31 The swinging of the carrier 43 on itspivot 44 will obviously act to raise and lower the sliding linger" 40and the carrier will also impart own swinging motion to the finger.

The finger 1 1 slides vertically in guide- Wars 42 fixed to the bracket45, the sliding action being produced by a second lever 53 pi oted at tothe carrier 43. This lever loosely pivoted at F5 near its middle to thebracket and its inneren'd is connected to theupp end of finger by a coilspring 56; This coil s -irin'g tends to pull the finger down against astop collar 57 fixed to a; re The rod is pivoted to the lever HU- -3 andpasses loosely through a lug on the upper end of the finger 41 and actsto raise it positively. The swinging of the carrier 4t?) will obviouslyimpart a swinging": action to the lever 58 \v-l'iich will in turn raiseor lower the finger 41. The finger i l and i allow the lever swing shownin Fig. l Without interference. A spring 59 acts against abutment to restore the su 'ingin carrier 43h normal posiso and the finger 40 to tieuafter it has been moved in the feeding operation.

A horizontally reciprocating feed member or dog 60 pushes the lowermostlift against the finger 40 and" this swings the carrier t?) about itspivot 44-. The pivot will be raised and likewise the pivot 49 to agreater extent, thus raising the finger 40 to allow the lowermost liftto" pass. The pivot 54 will be raised. thus swinging the lever 53 on itspivot 55 and lowering the slide finger 4 1. The finger 41 Will engagethe top surface of" the lowermost blank and deway 42 have cut outportionsto freely to the dotted line positions the spring will allow thefinger to yield in case athick blank is encountered. The in er will thusprevent the feeding of the second blank, whatever its thickness. 'inespring 555 then restores the carrier to n rn'ial position with thefinger d0 against the edge of the lowermost blank.

shown in Fig. 1 the dog 60 is sup- LLG-Ll on substantially parallellinks 61. 62 p voted to the frame at 68, and 64 respectively. Ahorizontal motion is in'iparte'd to links and the feed dog by an arm 65"WlIOS'G slotted end 66 reinovably engages a pin 6? on a crank 68. Thiscrank is mounted on one end of a shaft 69 supported in: bearings on theframe, and the other end of the shaft carries an arm 70- having a camfollowing roller 71 adapted to engage the cam surface 72' on the earn 9.

The lifts are pushed out one by one onto the rotatable table 10- wherethey are grippod at the rear by plates 80 (Fig. 4) and at the breastpart by a sliding clamp plate 81 pressed towards the lift by a spring82. The plate 81 cannot move however until the table rotatessufficiently to enable the win 83 to pass off the cam surface 84 (SeeFigs. 3'. t a-nd 6). This cam surface 84. is fixed and is secured to adepending bracket carried by the yoke 92. The plates 80' and 81 areundercut to aid in ripping the lift and in holding it down.

Withthe lift secured on the tahle. the ier rotates until the lift comesbeneath 5. The cutter head 90 has an integral sleeve 91 to the upper endof which a belt pulley 92i'ssecured. The pulley 92 is driven by a beltfrom the pulley 4' on the main drive shaft the belt also passing overpulleys 93- and' 94. The cutter headQO has do vnwardlv opening: sockets95 containing: pins 96' which are secured to the presser plate 95 Thepins 96 are loose in the sockets and are carried by bolts 98 which passfl'll'f-Hlfll'll onenino's in the sockets and springs 9. allow the pinsand presser plate 97 to meld or rock somewhat when an uneven lift isencountered. The cutter head 90 carries a knife or cutter 100 shown bestin Fig. and indotted lines in Fig; 5}. This knife 100 extends obliquelythrough slots in the cutter and in the presser plate to engage tl cblank: the knife could. if desired, be formed integrally with the member90.

The cutter head 90 is raised and lowered with a sleeve 101 which restsagainst the nullev at its upper end and engages a thrust bearing 102 atits lower end. For operating the sleeve- 101. a bifurcated lever 103(see Fig. 1) is pivoted to a fixed pivot 104 and is connected to thesleeve 101 by pivot bolts 105. The inner end of the lever 108 is pivotedat 106 to a block 10-? through which passes a rod 108 having a stopcollar measuring and cutting device shown in at the upper end. The lowerend of the rod 108 is secured to a slotted block 109 which slides inguides 110 on the frame. A. stiff coil spring 111 normally presses theblock 107 against the stop collar and yieldingly forces the cutterdownwardly when such action is permitted under conditions to bedescribed.

The distance which the cutter is depressed is determined by a measuringrod or cutter setting device which extends down through the cutter headand engages the top face of the heel lift. The rod 120 is looselypivoted at its upper end to a lever 121, the lever having a pivotsupport at 122 on a bracket 123. An arm 124 is formed integrally withthe lever and is connected with the bracket 123 by a spring 125 so thatthe measuring rod is normally pressed downwardly. The position of therod determines the position of the knife in the following way :The lever121, at its lower end, has a fork with inwardly directed pins 131engaging in slots 132 in a wedge member 133 (shown in detail in Fig.10). The wedge member 133 is forked and slides between the sleeve 101and a fixed casing 134; the position of the wedge will obviouslydetermine the amount the cutter head can descend. The wedge member hasguides 135 to engage and slide on guideways 136' on the casing 134. (SeeFigs. 5 and 10). The wedge has also at one side a projecting plate 137with teeth 138 thereon. These teeth co-operate with a pivoted pawl 139to lock the wedge to hold the measuring rod raised. The pawl is normallypressed into action by a spring 140 but it can be released at the propertime by a lever 141 pivoted to the frame at 142.

Before the measuring rod can descend, the pawl must be released and, forthis pi1rpose, the lever 141 is pivotally connected at 143 to a crossrod 144 (see Fig. 1). One rod 144 operates two sets of levers, pawls,etc. as shown, and is connected to hell crank 145 pivoted to the frameat 146. The bell crank is connected by links 147 to lever 148 and thelatter has a cam roller on one end to engage a cam 150 on the cam shaft8.

For restoring the wedge 133 to raise the measuring rod or cutter settingdevice, the lever 141 has an arm 151, which at a time determined by thecam 150, will engage the fork130 and push the wedge inwardly where itwill be locked by the pawl 139.

The cutter head is controlled by a cam on cam shaft 8. The cam engages aroller follower on the lever 162 and a link 163 connects lever 162 withbell crank 164. The latter is pivoted on the frame at 165 and has onearm connected by a rod 166 with a toggle 167. When the toggle links arestraightened, the block 109, previously described, is free to rise inthe guide 110 and the spring 111 causes the cutter to descend.Conversely, breaking the toggle will raise the cutter head so that thewedge can be subsequently operated to raise the meas v uring rod.

The cutter head and knife revolve rapid- 1y at all times, and, when themeasuring rod has engaged the middle of the heel lift, the knife isarranged to come a trifle lower in order to skive off the lift. A smallpart of the surface in the middle of the lift will not be cut at firstbecause the cutting surface of the knife extends inwardly only to theperiphery of the rod. However, as soon as the lift is carried aroundslightly by the table, the center of the lift will also be skived offeven with the outer portions.

The next operation is that of ejecting the skived lifts. (See Figs. 5and 6). The lift, as it leaves the cutter, is in a clamped position onthe table due to its engagement with plates 80 and 81. To release thelift when it arrives beneath the discharge magazine 170, the fixed cam84 engages the pin 83 and pushes it to the left as viewed in Fig. 6;this releases the lift, whereupon a plunger pushes it up into themagazine 170. This magazine 170 is similar to the magazine 20 butcarries a spring pressed catch 171 (see Fig. 8) having a'beveled lip172, the bevel being engaged by the lift to turn the catch on its pivotin order to allow the lift to rise in the magazine.

To expel the lift, a cam controlled plunger or ejector 173 is provided(seeFigs. 5 and 6) it has projecting pins 174 sliding in slots in asocket or sleeve 175 secured to the table 10. The plunger is normallyheld down by a forked leaf spring 176 attached to the table andengaging" the pins 174. The plunger is lifted automatically by the arm177 (see Figs. 1 and 6) which has bifurcations engaging the pivoted tothe framework at 178 and is rocked by an arm 179, link 180, arm 181,rock shaft 182 and arm 183 which latter is actuated by the cam surface186. The arm 177 opposite to arm 177 is connected directly to the arm183 by a link 185.

To prevent further feeding when the magazine 170 is full of lifts, theslotted link 65 is automatically raised from engagement with the pin 67(see Figs. 1 and 2). This is accomplished by a roller on a rock arm 191secured to a shaft 192 journaled in the framework. The shaft has asecond arm 193 thereon whichis connected by a rod 194 with an arm 195and a'disk 196 near the top of the magazine 17 0. The disk 196 issuspended from the arm 195 by a stem 197 and both disk and arm areraised vertically by the lifts in the magazine as the latter fills up.The arm 195 compresses a coil spring 198 and thus yieldingly raises therod 194 to automatically disengage the feed pins 174. The arm is g link65. The rod 119a slides in a bearing 199 on the framework and has abutton 200 swivel led thereon which can be turned 'to rest on a lag 201{on the bearing 19!) to thereby maintain the rod raised and the feedlink 65 in non-feeding position. The disk 196 and arm 195 are swungaround manually over the top of the magazine 170* when the latter isfull and the magazine can then be removed and a like one substituted.

Referring to Fig. 11 a development of the cam surfaces is shown and thesequence of the operations oi? feeding, measuring, one ting and ejectingis indicated. The timing can of course be varied as conditionsnecessirtats.

Referring to Figs. 12 to 15., a modified form of clamping device for thebits is shown. A series of clamping lugs 211 having downwardly extendingstuds 212 .are mounted on the table 10 to slide radially with referenceto the center of the ejector. The studs 212 areguided in radial slots213 in the table 10. The studs 212 project below the radial slots into aseries of spiral {slots 21'? in a cam plate 214 wl'iich is securedbetween the table 10 and a spanner nut 216; the spanner nut is screwedonto the outer surface of the ejector socket 1:?5 and bears against ashoulder on the socket. .illhe plate 214, with its spiral slots, acts asa .cam to force the clam-ping lugs outwardly and linwardly in the radialslots, and aspring220, attached atone end to a stud-218 on the tahle,and at the other end to an arm 2:19 on the plate 214-, normall-y holdsthe plate in a position to clamp the hit.

As the table rotates, :the clamping lugs will be simultaneously releasedwhen the adjustable bolt222 carried on the lug 221 tengages a camsurface 224: on an interrupted ring member 223. The ring member 223 issupported :by the bracket on the yoke-'22. The head of the bolt-222rides on the-incline- 224k and retracts the clamping lugs 211, the lugsremaining in unclamped position as long as the bolt 22,2 remains incontact with the interrupted {ring member 223.

The operation will be apparent from a careful reading of the above butbriefly the action is as. follows: A magazine ifllll of lifts is placedin position as shown :in Fig. a and the feed dog pushes them .out.oneatatime upon the intermittently rotating table where they'are clamped inposition and car ried :under the knife. (See 5 The measuring roddescends upon the lift and determines the position to which the cuttermay descend in accordance with 1110 thickness of the lift. Thecuttingtakes place, the table rotates again and carries the lift totheejecting position .where it is automatically released and then pushedup ;i-nto.'the discharge magazine. When the latter s full, the feed isautomatically out off.

complete machines are sh wn; they are s b antially duplicates i ricallydisposed but the device is not 11, nited to any particular umber of maci e although a plurality of mach nes i better adapted to secure readilya compa t and convenient asse bly to economize space and rendersunnecessary a complete duplication of all the parts.

Haring described any invent on, what .1 claim as new and desire toseculie by Letters Patent ot' the United .Sta es is:

1. In a blank trea ing mac ine, .a teed ag ine, .a rotary t bl means toteed blanks one by one from {the magazine to the rotary table, means tosecure the blanks .on the rotarytab ain an tc measure he b ank and skiethem while secured on the ro ary table, and means to transfer the blankstrom the rotary table to a stacking ma azine.

2. In a blank treating machine, a feed magazine, ,a rotary table, meansvto teed blanks one by .one from the magazine to the rotary table,meansto secure: the blanks on the rotary table, ,means to skive the{blanks while secured .on the rotary table, and means to transfer theblanks trom the rotary table to a stacking magazine.

3. In a blank treating machine, a feed magazine, a ,rotary .table, meansto feed blanks one by :one fromthe magazine to the rotary table, meansto skive the blanks while supported on the rotary table, and means totransfer the blanks from the rotary table to a stacking magazine.

11 a bl nk tre ing machine, a rota y ab e, a feed magazine at one sta in, m ans to feed iblanks ."one .by one from the magazine to the rotarytable, and means at another station (to shine the blanks while supportedby the rotary table.

5. In a blank (treating machine, a rotary table, a iteed magazine atonestation,-means to feed blanks one by one trom the magazine to the-rotarytable, and means at another station to measure and skins the blankswhile supported by the rotary table.

6. gln ,a blank treating machine, a rotary table, ,a feed 7 magazine atone station, means to feed blanks one by one 'from the magazines .to therotary table, means operable automatically as the table rotates, .tosecure the blanks ,on the table, and ,means at another station to skiyethe secured blanks.

7. In a blank treating machine, a rotary table, .a feed magazine at oneStation,.1neans to feed blanks one ,by one from the .n agazine to therotary table, means operable automatically as the table rot-ates, :tosecure the blanks (on the .table, and means at another station .both toski-ye and measure the secured blanks.

,8. In a hlank treating machine, support for blanks, means gtormeasuringthe thickness of a blank while resting on the support,

and means for'skiving the blank while the latter retains its positionrelatively to the support.

9; In a blank treating machine, an intermittently movable support forblanks, means for measuring the thickness of a blank when the support isstationary, means for 'skiving part of the surface of the blank in themeasuring position and subsequentlysklving the remainder of the'surfaceof the blank when the support moves.

10. In a blank treating machine, a rotary table, means to feed blanksone by one to the rotary table, and a rotary knife to operate on theblanks while supported on the rotary table. 1

11. Ina blank treating machine, a movable support, means to feed blanksone by one to the movable support, means to meas-' ure the blanks whileon the movable support, a knife to operate on the blanks while on themovable support and connections between said knife and measuring meansfor adjusting the former from the latter.

12. In a blank treating machine, a movable support, means to feed blanksone by one to the movable support, means to measure the blanks while onthe movable support, and a knife located at the same station as is themeasuring means and adapted to operate on the blanks in the measuringposition.

13. In a blank treating machine, a movable support, means to feed blanksone by one to the movable support, blank securing means operable bymotion of the support, and a rotary knife to operate on the blanks intheir supported and secured positions.

14:. In a blank treating machine, a movable support, means to feedblanks one by one to the movable support, blank securing means operableby motion of the support, means to measure the blanks while on thesupport, anda knife to operate on the blanks, said knife being set bythe measuring means.

15. A machine of the class described having, in combination, a supportfor a blank, a cutter for evening the blank adjustable toward and fromthe support, mechanism for measuring the thickness of the blank,

and means for adjusting the cutter in accordance with the determinationof the measuring mechanism.

16. A blank treating machine having, in combination, a support forblanks of different thicknesses, a cutter adjustable toward and from thesupport, and means including a measuring member movable by contact withthe blank with respect to the cutter for adjusting the cutter into aposition dependent upon thethickness of the blank at the 10- calityengaged by the measuring member.

port for blanks, a rotary cutter, means to move the cutter axially, andmeans to engage V a supported'blank to predetermine the position towhich the cutter shall move.

19. In a blank treating machine, a support for blanks, a cutter, ameasuring rod to engage a supported blank, and a wedge connected to themeasuring rod to determine the ultimate position of the cutter.

20. In a blank treating machine, a support for blanks, a cutter, ameasuring rod to engage a supported blank, a wedge connected to themeasuring rod, means to lower the cutter to a position determined by theposition of the wedge, and means to raise the measuring rod and to lockthe wedge.

21. In a blank treating machine, a vertically movable cutter, ameasuring rod, means connected to the rod to determine the distance thecutter shall descend, means to raise the cutter, and means to raise therod.

22. In a blank treating machine, a movable cutter, means to raise and tolower'the cutter, means to determine the lowermost position of thecutter, a lock for said means, and releasing means for the lock.

23. In a blank treating machine, a support for blanks, a movable cutter,means to raise and to lower the cutter, a rod to en gage a supportedblank, a lever secured to the rod, and means connected to the lever tolimit the lowermost position of the cutter;

24.18, blank treating machine having, in combination, a support for thework, a cutter, yielding means for urging the cutter toward the support,an adjustable stop for limiting such movement, and measuring meansarranged to contact with the work and to adjust the stop in accordance.with the thickness of the work.

25. A machine for evening blanks having, in combination, a substantiallyflat support for a blank, a rotary cutter the plane of the cut of whichis substantially parallel to the plane of the support, means foradjusting the cutter yieldingly into a position parallel to but spacedfrom the support, means for causing relative movement be tween thecutter and the support in a direction transverse to the direction of theadjusting movement to cause the blank to be evened, and means actingautomatically to raise the cutter at the end of the evening operation.

26. In a blank treating machine, a cutter, means for rotating thecutter, a lever to raise and lower the cutter, a toggle to control thelever, and means for intermittently actuating the toggle.

27. In a blank treating machine, a cutter, means for rotating thecutter, a spring tending at all times to move the cutter into operativeposition, a toggle, and means for operating the toggle intermittently topress the spring and withdraw the cutter from operative position.

28. A machine for eveningblanks comprising a substantially flat supportfor a blank, a rotary cutter the plane of the out of which issubstantially parallel to the plane of the support, automatic means foradjusting the cutter into a position dependent upon the thickness of theblank and means for producing relative movement between the support andcutter in a direction to cause the blank to be traversed by the cutter.

29. In a blank treating machine, a movable support, a sliding clampplate on the support, a spring to close the clamp plate, and a fined camto open the clamp plate against the tension of the spring and tosubsequently allow the spring to close the clamp plate.

30. In a blank treating n achine, a mo:- able substantially lat support,a sliding clamp plate on the support, a feeoing station, an ejectingstation, a spring to close the clamp plate as the blank leaves thefeeding station, and a fixed cam at the ejecting' station to open theclamp plate against the tension of the spring.

31. In a blank treating machine, movable substantially tlat support,blank clamping means on the support, a feeding station, an ejec station,a tired cam at the feet ing station to open the clamp the lattreachesthe feeding station, a spring to close the clamp as the latter leavesthe tee station, and a tired cam at the ejecti tion to open the clampagainst the l. of the spring.

32. ln a blank treating nuichine, i able support, a clamp plate fixed onthe support, a slidable clamp plate on the support, a spring to closethe slidable clamp plate, and a fixed cam to open the slidable clampplate gainst the tension of the spring.

ln a blank treating machine, a supaort for blanks, an axially movablerota; cutter head to operate on the supported. blanks, and a rockr lymounted presser plate carried by the cutter head.

34;. In a blank treating machine, a rotatable cutter head and a presserplate rockably carried by the cutterhead to eng the top face of anuneven blank to hold it while being cut.

in a blank treating machine, cutter head, presser plat-e, spring pressedplung ers loosely moruited on the cutter head, an

connected to the presser plate whereby the latter may yield and rockwhen in engage ment with a blank.

36. In a blank treating machine, a rotary cutter head having a slottherein, a presser plate located below the cutter head and rotatabletherewith, s. L plate having a s to register with that of the cutter heand a knife secured the slot in the head and extends through the slot iipresser plate.

3?. in a blank treating machine, a slotted cutter head, a slottedpresser plate yieldably carried by the cutter head, and a knife securedin the slot of the cutter head and adapted to extend through the slot inthe presser plate when the latter engages a supported blank.

38. lfn a blank treating machine, a cutter head, a slotted presser plateyieldablv carried by the cutter head, and a knife swured to the cutterhead and adapted to extend through the slot in the presser plate whenthe latter engages a supported blank.

89. In a blank treating machine, a magazine holder adjustable to receivedi'tlerent sized magazines, blank supporting means carried by the holderbelow the magazine, and feeding mechanism adjustable wit-h reference tothe supported blanks.

40. In a blank treating machine, a bracket, a magazine holder adjustableon the bracket to hold ditlerent sized magazines, and feeding mechanismadjustable with rat erence to the holder and its supported magazine.

41. In a blank treating machine, magazine holder adjustable to receivediflierent sized magazines, and means carried by ti o holder below themagazine "to support the blanks when released from the magazine.

e2. A machine for evening blanks, comprising a substantially flatsupport for a blank, means for pressing-the blank against the support, acutter the plane of the cut of which is substantially parallel to theplane oi the support, and means :t'or moving the support and with it theblank past the cutter.

43. A machine for evening blanks, comprising a substantially flatsupport for a blank, means "for clamping the blank upon the support,means for pressing the blank against the support, a rotary cutter :theplane of the cut of which. is substantially parallel to the plane of thesupport, and means for moving the support and with it the blank past thecutter.

44,-. In a blank treating machine, an adjustable holder for magazines ofdifferent sizes including a breast engaging member, side engagingmembers, levers connectedto the side engaging members, and a -nut=toengage both the breast engaging member and I the levers to move all theengaging members simultaneously.

justable holder for magazines of different sizes including a breastengaging member, a threaded stud secured thereto, side engaging members,levers secured to the latter, a nut threaded on the stud and extoriorlythreaded in an opposite direction to engage the levers whereby theengaging members can be moved simultaneously.

4.6. In a blank treating machine, an adjustable holder for magazines ofdifferent sizes including a breast engaging member having a threadedstud mounted slidably in a fixed support. side engaging members eachhaving a rod slidably mounted in a fixed support, bell crank leverspivoted on the fixed support and each connected to one of the rods, anut threaded on the treaded stud, a collar to hold the nut against axialmovement, and threads on the outer surface of the nut to engage the bellcrank levers.

47. In a blank treating machine, the combination of feeding means, adischarge magazine, a rod, a rotatable arm on the rod, a

' stop secured to the arm and adapted to be tions between the arm andthe feeding means.

49. In a blank treating machine, the combination of feeding means, adischarge magazine, a movable stop therein adapted to stop the feed, andmeans for moving the stop away from the magazine to allow the removal ofthe latter.

- 50. In a blank treating machine, the combination of feeding means, adischarge magazine, a stop therein adapted to stop the feed, and arotatable arm carrying the stop whereby the stop and arm can be swungaway from the magazine to allow the removal of the latter. v

51. In a blank treating machine, the com bination of feeding means, adischarge magazine, a slidable stop in the magazine con neoted to thefeeding means, and means for swinging the stop outside the magazine toallow the removal of the latter.

52. In a blank treating machine, the combination of a feed member, adischarge magazine, a stop inside the magazine adapted to be engaged bythe blanks in the magazine when the latter is full, and a connectionbetween the stop and the feed member to stop the latter.

53. In a blank treating machine, the combination of a feed member adischarge magazine, and a connection between the discharge magazine andthe feed member to stop the latter when the magazine is full.

541. In a blank treating machine, a discharge magazine for holding astack, a stop within the magazine, and means whereby the stop can bemoved outside the stack to allow the removal of the latter.

55. In a blank treating machine, a magazine, a ieed member, andrelatively movable fingers for controlling the feeding of blanks fromthe magazine, said fingers being operated by the feed member through themedium of the blanks.

In a blank treating machine, a ma asaid mechanism including a slidingand swinging finger.

57. In a blank treating machine, a magazine, a feed member,feed-controlling mechanism operated by the feed member, said mechanismincluding sliding fingers and being adjustable with reference to thefeed member to feed different sized blanks.

58. In a blank treating machine, a magazine, a feed member, andfeed-controlling mechanism operated by thefeed member and adjustablewith reference to the feed member to operate'on different sized blanks.

59. In a blank treatin machine, a magazine, a feed member, fee-eontrolling mechanism including a swin ing carrier having a slidingfinger operated by the feed member to swing the carrier in onedirection, and a spring to restorethe carrier to normal position.

60. In a blank treating machine, a magazine, a feed member, andfeed-controlling mechanism including a swinging carrier having a slidingfinger operated by the feed member through the medium of the blanks.

61. In a blank treating machine, a magazine having an outlet, means forfeeding blanks through said'outlet, and mechanism for controlling thenumber of blanks which can be fed through the outlet at onetime, saidmechanism including movable fingers extending across said outlet andconnections between said fingers such that pressure exerted upon one ofthe fingers operates both of them.

62. In a blank treating machine, a magazine having an outlet, means forfeeding blanks one by one through the outlet and mechanism forpreventing the feeding of more than one blank at a time through theoutlet, said mechanism including a finger adapted to be swung outwardlyto permit the lowermost blank of the stack to be fed, and a secondfinger adapted to be brought down upon the top of the lowermost blank,and connections between the fingers such that swinging oi the firstmamedfinger outwardly causes the downward movement of the second-namedfinger.

6?). In a blank treating machine, a magazine, feed-controlling mechanismincluding a swinging carrier, a sliding finger thereon, a second slidingfinger, and levers, each pivotally connected with a fixed support, withthe carrier and with a sliding finger.

64. In a blank treating machine, a magazine, feed-controlling mechanismincluding a swinging carrier, a sliding finger thereon, a leverpivotally connecting the finger with a fixed support and with theswinging carrier.

65. In a blank treating machine, a magazine, feed-controlling mechanismincluding a swinging carrier, a sliding finger thereon, a leverpivotally connected with the finger, with a fixed support and with theswinging carrier, a second sliding finger mounted in a fixed guidewayand a second lever pivotally connected to the carrier, to the fixedsupport and to the second finger.

66. In a blank treating machine, a rotary support, a drive shaft,oppositely extending cranks thereon, and means connecting the cranks tothe support to rotate the latter intermittently.

67. In a blank treating machine, a magazine having an outlet, a feedmember, means for operating the feed member to push the blanks throughthe outlet, relatively movable fingers extending across the outlet andadapted to prevent the feeding of more than one blank at a time throughthe outlet, said fingers being operated by the feed member through themedium of the blanks.

In testimony whereof I have signed my name to this specification.

IRA C. BUCKMINSTER.

